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the other simulations.
Clear this circuit?
Every component and wire is removed and the clock is set to zero.
Presets
Ready-made circuits. Loading one replaces the circuit on screen and
waits: the readings are live at once, and Run starts the clock. Each
says what to check against your own calculation.
Keyboard & mouse
Click or drag from the toolbar
Choose a component, then click the grid to place it; or drag it
straight from the toolbar. Dropped on a wire, it is put in series.
Drag from a terminal
Draws a wire to wherever you let go. A wire that ends on another wire
joins it there. With the Wire tool, start from any grid point.
Click a component
Selects it: its values, current, p.d. and power appear on the right,
and its graph is drawn. Clicking a switch also opens or closes it.
Drag a component
Moves it; the wires on its terminals follow.
R · Delete
Turn the selected component a quarter-turn · delete it
Arrow keys
Move the selected component one grid square.
Space · . · 0
Run or pause · advance one frame while paused · reset the clock and
the capacitors
[ · ]
Slower · faster time scale
1 – 9 · L · W
Cell (AC source in the AC view), resistor, variable resistor, lamp,
switch, two-way switch, capacitor, ammeter, voltmeter · inductor ·
wire
C · E · P · V
Toggle current dots · electron flow · colour by potential · values
G · H · F · + · −
Grab · Pan · fit the circuit in view · zoom in · zoom out
Escape
Back to Grab; closes any open panel
Every component is ideal. Wires, ammeters and closed switches have no
resistance at all; voltmeters and open switches pass no current at all.
A cell is an EMF with an optional internal resistance. In the AC view
the meters read RMS values over the last whole cycle, and the graphs
are an oscilloscope showing the last three cycles. A lamp is a fixed
resistance, whatever its brightness. Current is conventional (from +
round to −) unless Electron flow is on.